Number of the records: 1
Enhancement of conductivity, mechanical and biological properties of polyaniline-poly(N-vinylpyrrolidone) cryogels by phytic acid
- 1.0538598 - ÚMCH 2022 RIV GB eng J - Journal Article
Milakin, Konstantin A. - Morávková, Zuzana - Acharya, Udit - Kašparová, M. - Breitenbach, S. - Taboubi, Oumayma - Hodan, Jiří - Hromádková, Jiřina - Unterweger, C. - Humpolíček, P. - Bober, Patrycja
Enhancement of conductivity, mechanical and biological properties of polyaniline-poly(N-vinylpyrrolidone) cryogels by phytic acid.
Polymer. Roč. 217, 5 March (2021), č. článku 123450. ISSN 0032-3861. E-ISSN 1873-2291
R&D Projects: GA ČR(CZ) GA18-04669S
Institutional support: RVO:61389013
Keywords : polyaniline * cryogel * conductivity
OECD category: Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics
Impact factor: 4.432, year: 2021
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0032386121000732?via%3Dihub
Polyaniline-based cryogels were prepared by oxidative cryopolymerization in the presence of various concentrations of poly(N-vinylpyrrolidone) and phytic acid used as a polymer support and a dopant, respectively. Mechanical strength and handling stability of the resulting macroporous materials (pore size up to 70 μm) were significantly improved by the addition of poly(N-vinylpyrrolidone) into the polymerization system compared to the cryogels crosslinked only by phytic acid. Increase of poly(N-vinylpyrrolidone) concentration in the reaction medium above 5 wt%, while not noticeably changing mechanical properties, was found to lead to a decrease of conductivity and specific surface area. Introduction of optimal amount of phytic acid (0.2 M) as an additional codopant, in opposite, allowed enhancement of the material conductivity and specific surface area as well as increase of their tensile modulus. Polyaniline-poly(N-vinylpyrrolidone) cryogels containing phytic acid also showed better cytocompatibility due to lower cytotoxicity and improved cell adhesion and proliferation.
Permanent Link: http://hdl.handle.net/11104/0316934
Number of the records: 1